The Sundown Audio E-12 V.4 D4 12" bundle includes a dual 4-Ohm subwoofer rated at 750w RMS (1500w peak), RQB12 vented enclosure, and a single subwoofer installation kit with 12 ft of 14 AWG speaker wire, 10 metal screws, and 2 spade terminals. The E-12 V.4 D4 features a vented motor design with a solid pole piece, double-stacked magnet, poly-cotton spider, stitched tinsel leads, and high-temp 4-layer copper voice coil. Its 14mm one-way linear Xmax, 6.37" motor diameter, and 6.5" mounting depth support controlled excursion and thermal handling, optimized for ported enclosures. The subwoofer has an RE of 6.1 Ω, FS of 36.6Hz, sensitivity of 84.96 dB, displacement of 0.08 cu ft, and cutout diameter of 11.125".

The RQB12 enclosure is a single 12" vented box constructed from 3/4" USA MDF with bedliner finish, precision-cut mounting holes, and top/bottom depth of 15". Net volume is 1.8 Cu Ft with external dimensions of 15" L x 22" W x 13.5" H, supporting subwoofer mounting depths up to 8.75" and tuned to 43Hz.

The included installation kit provides PVC-jacketed 14 AWG speaker wire, metal screws, and spade terminals. All materials are specified for secure connections and reliable signal transfer from the amplifier to the subwoofer, supporting a straightforward installation in compact or standard vehicle audio setups.